Give the child one physical card per night. They can use it once for any legitimate reason after lights out: water, bathroom, one question. If they don't use it, it goes into a collection they keep. Children who manufacture 5 return trips a night will often hold their card all night just to protect it.

What you need

one index card or piece of paper per night

How to do it

1"Here's your one card. Use it once for anything, or save it."
2If they come out: take the card. No further trips after that. The rule is the rule.
3In the morning: if the card is still there, it goes into their collection.
4After a week of saved cards, acknowledge it simply: 'You held onto six.' Nothing more.

Variations

**Korb-Tür:** If they use the card and come out again: Take the card, say nothing. "That was your one." No further trips. No discussion.
**Ausstieg:** In the morning, if the card is still there: "You saved it. That's one." Build the collection visibly so they see their own restraint.

💡 Parent tip

The collection matters more than you'd expect. Children who wouldn't stay in bed for themselves will protect their card. Make the collection real. A box, a jar, a visible stack.

What your child develops

Impulse control — a physical token makes the decision to return concrete and countable
Self-monitoring — children develop awareness of real versus manufactured needs
Agency within limits — they have genuine power over one real thing